Timing doesn't seem to be any different for E85, I would suggest a little more heat in the engine. Some like a lot more, my suggestion it to try to leave the staging lanes at about 135 degrees to start. After you get it dialed in better try going up 5 degrees at a time. You should not need more than about 170 at the starting line, mine is around 140-150 at the line. Any more and I slow.

I leave or at least try to be in the burn out box at 150ish and after a run in warmer weather it 200+ by the time I get back to the trailer. It runs it's best at 160 on the starting line and that is on gas so it will be good to run cooler than what it has been...OK then timing stays...

I would try it just like you did on gas first pass. 160 at the line and see what the cars does. You will not get anywhere near 200* when the turn is right. Most I think you will see leaving at 160 is 175. Just as reference I leave at 170 and cross the line at about 180, by the time I'm back at my pit spot I'm back at 165-170.

As far as O2 I log lambda. If you have that option it's the easiest as its independent of fuel type. If not I have the factor somewhere and will get it for you tomorrow.